Question

1.large biological macromolecules carry out several roles in the human body. What is one of these roles?

Answer 1

The correct answer is: D. all of the above

A macromolecule is a large molecule present in the cell, composed of a huge number of monomer units with the various functions. There are four main groups: proteins (monomers are amino acids), nucleic acids (monomers are nucleotids) , lipids (monomers are free fatty acids) and carbohydrates (monomers are simple sugars such as glucose).

Some of their functions:

• Provide structure on the cellular levels-lipids (phospholipids) are the main components of the cell membrane;  

• store genetic material-nucleic acid (DNA, RNA) are the carriers of genetic information

• store energy-starch is energy source in plants;

• enzymes -proteins often are with the functionin metabolism

• etc.